docs: def _compute_magnitude_scaling_term(self, C, mag):
          """
          Compute magnitude scaling term as defined in equation 19, page 2291
          (Tavakoli and Pezeshk, 2005)
          """
          assert mag <= 8.5
          return C['c1'] + C['c2'] * mag + C['c3'] * (8.5 - mag) ** 2.5